Serial EEPROM vs. Flash EEPROM emulation.pptx

:EEPROMisgenerallyusedwithinanapplicationtostoreapplicationspecificdatasuchasdiagnostic,calibration,eventoriented,trackinginformation,:Ascostandqualitypressuresmount,ponentcontentwithintheirECU’(SPIorI2C).::ess4-municationoverhead<100uSEraseNotrequired100-200mspersector(65nmnode)municationdriverinitiatestheprocess,/esstimingFlashspaceefficiency/Flashutilization13February20126FlashEEPROMEmulationMethodology13February20127FlashEEPROMEmulationMethodologyFlashBankN-1...FlashBank1FlashBank0InterruptVectors,RestVectors,Exception,ProgramFlashBankN-1EEPROMEmulationSector0Sector1SectorM-1...DedicatedEEPROMemulationflashbankEEPROMwrite/esswhilecodeexecutedfromotherBankMultiplesectorsperEEPROMemulationflashbankUniformusageofsectorsandhenceoptimumwrite/erasestressSectorsareusedinacircularmannerNodatalostatunexpectedpowerlossValiddataiscopiedintonextsectoratendofactivesectorbeforestatusbitsareupdatedAllEEPROMlocationsareprotectedbySECDEDErrorCorrectingCodes13February20128FlashEEPROMEmulationMethodologiesLinkedlistapproachwithindexanddatafieldsFlexiblescheme(occurrenceofdifferententries,datasize)OptimumutilizationofsectorIndexusedasidentifier(datain/-valid),blockaddress,eccpaddingandlinktonextentrySectorheaderco